摘要:这3名患者在取得稳定的分子学缓解之后(融合基因转阴PCRU)停用达沙替尼。1名患者复发,另外两名患者在1年后仍保持了PCRU。以前说过,达沙替尼确实可以提高免疫力,希望今后能获得更多的相关研究报告。5 W6 G' z# c, r5 A
关于这个研究值得注意的是,这三名患者都是服用格列卫失败后转用达沙替尼的,也即他们对格列卫是耐药的。这与法国的格列卫停药研究又有所不同,那个研究中的患者都是对格列卫反应良好的。希望医生们能扩大研究长期观察,看看停用达沙替尼是否能持久不复发。
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作者:来自澳大利亚
% }/ N' O! Y" L1 E来源:Haematologica. 2011.8.9.
. F$ f9 a G9 ^Dear Group,4 |8 a" [; I- W0 u( ~/ \5 S
) `: e& ~9 _0 A( fSome of you are on Dasatinib (Sprycel) and we wish to give news on all CML
8 S9 @4 `# Q; K5 d* J; o( |9 Jtherapies. Here is a report from Australia on 3 patients who went off Sprycel
0 c0 {; f9 b4 vafter stable molecular response (PCRU). 1 patient relapsed but 2/3 patients D! }) r {5 L, l& t/ N& l
remain in stable PCRU at the 1 year mark. Some of you may remember that Sprycel: r: {7 {, g. v) ]6 \
does spike up the immune system so I hope more reports come out on this issue.
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4 B/ z, c, `/ U2 `, ]! tThe remarkable news about Sprycel cessation is that all 3 patients had failed: v" K4 V. `2 z" O& H0 G
Gleevec and Sprycel was their second TKI so they had resistant disease. This is
* A! e5 {' L" g$ p' wdifferent from the stopping Gleevec trial in France which only targets patients
/ ?, E% q% S, j& J/ H5 T) Uwho have done well on Gleevec.
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Hopefully, the doctors will report on a larger study and long-term to see if the
y- g/ J I& n% z/ O3 Kresponse off Sprycel is sustained.( G3 T3 K1 P7 B0 n/ H1 l6 Z
; \) q# V' ^3 S: B, F/ y% i0 OBest Wishes,! b k2 N1 D/ }& R
Anjana$ B5 Y% Z3 n& A! P J; y7 \6 H
B( C J. W$ D6 ^1 ~' H5 q+ k6 J: [ _; c
. d/ `& r' k9 F+ H/ hHaematologica. 2011 Aug 9. [Epub ahead of print]
: R% h4 k, J2 k2 @1 ~; IDurable complete molecular remission of chronic myeloid leukemia following4 r0 J/ W/ F8 Z5 Q1 N# V: `4 i
dasatinib cessation, despite adverse disease features.
' l" u) b/ N8 b: @& CRoss DM, Bartley PA, Goyne J, Morley AA, Seymour JF, Grigg AP.# j7 }9 v1 S6 q1 G
Source
- c7 W9 P3 U; |) v# CAdelaide, Australia;9 ^3 S6 d+ T Y$ p" @& j
% n2 b$ i$ T0 W! ~ A, D# hAbstract7 A7 Y$ a" d, a0 z! F1 K+ A
Patients with chronic myeloid leukemia, treated with imatinib, who have a, a! k/ q. o! L& K" m
durable complete molecular response might remain in CMR after stopping
9 ]# ^1 X1 [2 _3 y' p, o6 t5 U' Otreatment. Previous reports of patients stopping treatment in complete molecular$ V- H8 v- C4 A& W1 ~
response have included only patients with a good response to imatinib. We/ m0 s6 F ^6 c
describe three patients with stable complete molecular response on dasatinib: p, K4 h6 K$ j6 A; \; q# {! c3 v
treatment following imatinib failure. Two of the three patients remain in4 x! v! B+ r w8 N
complete molecular response more than 12 months after stopping dasatinib. In$ D i7 T! F! c1 @; U
these two patients we used highly sensitive patient-specific BCR-ABL1 DNA PCR to! h+ S8 y9 p3 D6 S4 [
show that the leukemic clone remains detectable, as we have previously shown in
2 c4 h5 j$ f" Jimatinib-treated patients. Dasatinib-associated immunological phenomena, such as+ D! K7 D$ q1 M+ l3 R
the emergence of clonal T cell populations, were observed both in one patient- k+ X# k3 t" w5 u( W9 H
who relapsed and in one patient in remission. Our results suggest that the
6 L" `2 d j$ o7 e+ l. n& Ycharacteristics of complete molecular response on dasatinib treatment may be7 m$ v( E& p v
similar to that achieved with imatinib, at least in patients with adverse) E; }9 U3 J% ?( @! K6 G! x
disease features.
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